Ronald G. Minnich | 5643942 | 2002-09-06 16:58:14 +0000 | [diff] [blame] | 1 | /* |
| 2 | * 82802ab.c: driver for programming JEDEC standard flash parts |
| 3 | * |
| 4 | * |
| 5 | * Copyright 2000 Silicon Integrated System Corporation |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU General Public License as published by |
| 9 | * the Free Software Foundation; either version 2 of the License, or |
| 10 | * (at your option) any later version. |
| 11 | * |
| 12 | * This program is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | * GNU General Public License for more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License |
| 18 | * along with this program; if not, write to the Free Software |
| 19 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 20 | * |
| 21 | * |
| 22 | * Reference: http://www.intel.com/design/chipsets/datashts/290658.htm |
| 23 | * |
Ronald G. Minnich | 5643942 | 2002-09-06 16:58:14 +0000 | [diff] [blame] | 24 | */ |
| 25 | |
Ronald G. Minnich | 5643942 | 2002-09-06 16:58:14 +0000 | [diff] [blame] | 26 | #include <stdio.h> |
Stefan Reinauer | 7ed78c8 | 2007-05-24 09:26:39 +0000 | [diff] [blame] | 27 | #include <stdint.h> |
Ronald G. Minnich | 5643942 | 2002-09-06 16:58:14 +0000 | [diff] [blame] | 28 | |
| 29 | #include "flash.h" |
| 30 | #include "82802ab.h" |
Ollie Lho | 184a404 | 2005-11-26 21:55:36 +0000 | [diff] [blame] | 31 | #include "debug.h" |
Ronald G. Minnich | 5643942 | 2002-09-06 16:58:14 +0000 | [diff] [blame] | 32 | |
| 33 | // I need that Berkeley bit-map printer |
Ollie Lho | 184a404 | 2005-11-26 21:55:36 +0000 | [diff] [blame] | 34 | void print_82802ab_status(uint8_t status) |
Ronald G. Minnich | 5643942 | 2002-09-06 16:58:14 +0000 | [diff] [blame] | 35 | { |
| 36 | printf("%s", status & 0x80 ? "Ready:" : "Busy:"); |
| 37 | printf("%s", status & 0x40 ? "BE SUSPEND:" : "BE RUN/FINISH:"); |
| 38 | printf("%s", status & 0x20 ? "BE ERROR:" : "BE OK:"); |
| 39 | printf("%s", status & 0x10 ? "PROG ERR:" : "PROG OK:"); |
| 40 | printf("%s", status & 0x8 ? "VP ERR:" : "VPP OK:"); |
| 41 | printf("%s", status & 0x4 ? "PROG SUSPEND:" : "PROG RUN/FINISH:"); |
| 42 | printf("%s", status & 0x2 ? "WP|TBL#|WP#,ABORT:" : "UNLOCK:"); |
| 43 | } |
| 44 | |
Ollie Lho | 761bf1b | 2004-03-20 16:46:10 +0000 | [diff] [blame] | 45 | int probe_82802ab(struct flashchip *flash) |
Ronald G. Minnich | 5643942 | 2002-09-06 16:58:14 +0000 | [diff] [blame] | 46 | { |
Stefan Reinauer | ce53297 | 2007-05-23 17:20:56 +0000 | [diff] [blame] | 47 | volatile uint8_t *bios = flash->virtual_memory; |
Ollie Lho | 184a404 | 2005-11-26 21:55:36 +0000 | [diff] [blame] | 48 | uint8_t id1, id2; |
Ronald G. Minnich | 5643942 | 2002-09-06 16:58:14 +0000 | [diff] [blame] | 49 | |
| 50 | #if 0 |
Uwe Hermann | a7e0548 | 2007-05-09 10:17:44 +0000 | [diff] [blame] | 51 | *(volatile uint8_t *)(bios + 0x5555) = 0xAA; |
| 52 | *(volatile uint8_t *)(bios + 0x2AAA) = 0x55; |
| 53 | *(volatile uint8_t *)(bios + 0x5555) = 0x90; |
Ronald G. Minnich | 5643942 | 2002-09-06 16:58:14 +0000 | [diff] [blame] | 54 | #endif |
| 55 | |
| 56 | *bios = 0xff; |
| 57 | myusec_delay(10); |
| 58 | *bios = 0x90; |
| 59 | myusec_delay(10); |
| 60 | |
Uwe Hermann | a7e0548 | 2007-05-09 10:17:44 +0000 | [diff] [blame] | 61 | id1 = *(volatile uint8_t *)bios; |
| 62 | id2 = *(volatile uint8_t *)(bios + 0x01); |
Ronald G. Minnich | 5643942 | 2002-09-06 16:58:14 +0000 | [diff] [blame] | 63 | |
Stefan Reinauer | ce53297 | 2007-05-23 17:20:56 +0000 | [diff] [blame] | 64 | /* Leave ID mode */ |
Uwe Hermann | a7e0548 | 2007-05-09 10:17:44 +0000 | [diff] [blame] | 65 | *(volatile uint8_t *)(bios + 0x5555) = 0xAA; |
| 66 | *(volatile uint8_t *)(bios + 0x2AAA) = 0x55; |
| 67 | *(volatile uint8_t *)(bios + 0x5555) = 0xF0; |
Ronald G. Minnich | 5643942 | 2002-09-06 16:58:14 +0000 | [diff] [blame] | 68 | |
Ronald G. Minnich | 5643942 | 2002-09-06 16:58:14 +0000 | [diff] [blame] | 69 | myusec_delay(10); |
| 70 | |
Ollie Lho | 184a404 | 2005-11-26 21:55:36 +0000 | [diff] [blame] | 71 | printf_debug("%s: id1 0x%x, id2 0x%x\n", __FUNCTION__, id1, id2); |
Ronald G. Minnich | d4228fd | 2003-02-28 17:21:38 +0000 | [diff] [blame] | 72 | |
Stefan Reinauer | ff4f197 | 2007-05-24 08:48:10 +0000 | [diff] [blame] | 73 | if (id1 != flash->manufacture_id || id2 != flash->model_id) |
| 74 | return 0; |
Stefan Reinauer | ce53297 | 2007-05-23 17:20:56 +0000 | [diff] [blame] | 75 | |
Stefan Reinauer | ff4f197 | 2007-05-24 08:48:10 +0000 | [diff] [blame] | 76 | map_flash_registers(flash); |
Ronald G. Minnich | 5643942 | 2002-09-06 16:58:14 +0000 | [diff] [blame] | 77 | |
Stefan Reinauer | ff4f197 | 2007-05-24 08:48:10 +0000 | [diff] [blame] | 78 | return 1; |
Ronald G. Minnich | 5643942 | 2002-09-06 16:58:14 +0000 | [diff] [blame] | 79 | } |
| 80 | |
Ollie Lho | 184a404 | 2005-11-26 21:55:36 +0000 | [diff] [blame] | 81 | uint8_t wait_82802ab(volatile uint8_t *bios) |
Ronald G. Minnich | 5643942 | 2002-09-06 16:58:14 +0000 | [diff] [blame] | 82 | { |
| 83 | |
Ollie Lho | 184a404 | 2005-11-26 21:55:36 +0000 | [diff] [blame] | 84 | uint8_t status; |
| 85 | uint8_t id1, id2; |
Ronald G. Minnich | 5643942 | 2002-09-06 16:58:14 +0000 | [diff] [blame] | 86 | |
| 87 | *bios = 0x70; |
Ollie Lho | 761bf1b | 2004-03-20 16:46:10 +0000 | [diff] [blame] | 88 | if ((*bios & 0x80) == 0) { // it's busy |
Uwe Hermann | a7e0548 | 2007-05-09 10:17:44 +0000 | [diff] [blame] | 89 | while ((*bios & 0x80) == 0) ; |
Ronald G. Minnich | 5643942 | 2002-09-06 16:58:14 +0000 | [diff] [blame] | 90 | } |
| 91 | |
| 92 | status = *bios; |
| 93 | |
| 94 | // put another command to get out of status register mode |
Ollie Lho | 761bf1b | 2004-03-20 16:46:10 +0000 | [diff] [blame] | 95 | |
Ronald G. Minnich | 5643942 | 2002-09-06 16:58:14 +0000 | [diff] [blame] | 96 | *bios = 0x90; |
| 97 | myusec_delay(10); |
| 98 | |
Uwe Hermann | a7e0548 | 2007-05-09 10:17:44 +0000 | [diff] [blame] | 99 | id1 = *(volatile uint8_t *)bios; |
| 100 | id2 = *(volatile uint8_t *)(bios + 0x01); |
Ollie Lho | 761bf1b | 2004-03-20 16:46:10 +0000 | [diff] [blame] | 101 | |
Ronald G. Minnich | 5643942 | 2002-09-06 16:58:14 +0000 | [diff] [blame] | 102 | // this is needed to jam it out of "read id" mode |
Uwe Hermann | a7e0548 | 2007-05-09 10:17:44 +0000 | [diff] [blame] | 103 | *(volatile uint8_t *)(bios + 0x5555) = 0xAA; |
| 104 | *(volatile uint8_t *)(bios + 0x2AAA) = 0x55; |
| 105 | *(volatile uint8_t *)(bios + 0x5555) = 0xF0; |
Ronald G. Minnich | 5643942 | 2002-09-06 16:58:14 +0000 | [diff] [blame] | 106 | return status; |
Ollie Lho | 761bf1b | 2004-03-20 16:46:10 +0000 | [diff] [blame] | 107 | |
Ronald G. Minnich | 5643942 | 2002-09-06 16:58:14 +0000 | [diff] [blame] | 108 | } |
| 109 | int erase_82802ab_block(struct flashchip *flash, int offset) |
| 110 | { |
Stefan Reinauer | ce53297 | 2007-05-23 17:20:56 +0000 | [diff] [blame] | 111 | volatile uint8_t *bios = flash->virtual_memory + offset; |
| 112 | volatile uint8_t *wrprotect = flash->virtual_registers + offset + 2; |
Ollie Lho | 184a404 | 2005-11-26 21:55:36 +0000 | [diff] [blame] | 113 | uint8_t status; |
Ronald G. Minnich | 5643942 | 2002-09-06 16:58:14 +0000 | [diff] [blame] | 114 | |
| 115 | // clear status register |
| 116 | *bios = 0x50; |
Ronald G. Minnich | d4228fd | 2003-02-28 17:21:38 +0000 | [diff] [blame] | 117 | //printf("Erase at %p\n", bios); |
Ronald G. Minnich | 5643942 | 2002-09-06 16:58:14 +0000 | [diff] [blame] | 118 | // clear write protect |
Ronald G. Minnich | d4228fd | 2003-02-28 17:21:38 +0000 | [diff] [blame] | 119 | //printf("write protect is at %p\n", (wrprotect)); |
| 120 | //printf("write protect is 0x%x\n", *(wrprotect)); |
Ronald G. Minnich | 5643942 | 2002-09-06 16:58:14 +0000 | [diff] [blame] | 121 | *(wrprotect) = 0; |
Ronald G. Minnich | d4228fd | 2003-02-28 17:21:38 +0000 | [diff] [blame] | 122 | //printf("write protect is 0x%x\n", *(wrprotect)); |
Ronald G. Minnich | 5643942 | 2002-09-06 16:58:14 +0000 | [diff] [blame] | 123 | |
| 124 | // now start it |
Uwe Hermann | a7e0548 | 2007-05-09 10:17:44 +0000 | [diff] [blame] | 125 | *(volatile uint8_t *)(bios) = 0x20; |
| 126 | *(volatile uint8_t *)(bios) = 0xd0; |
Ronald G. Minnich | 5643942 | 2002-09-06 16:58:14 +0000 | [diff] [blame] | 127 | myusec_delay(10); |
| 128 | // now let's see what the register is |
Stefan Reinauer | ce53297 | 2007-05-23 17:20:56 +0000 | [diff] [blame] | 129 | status = wait_82802ab(flash->virtual_memory); |
Ronald G. Minnich | d4228fd | 2003-02-28 17:21:38 +0000 | [diff] [blame] | 130 | //print_82802ab_status(status); |
Ronald G. Minnich | 5643942 | 2002-09-06 16:58:14 +0000 | [diff] [blame] | 131 | printf("DONE BLOCK 0x%x\n", offset); |
Ollie Lho | 761bf1b | 2004-03-20 16:46:10 +0000 | [diff] [blame] | 132 | return (0); |
Ronald G. Minnich | 5643942 | 2002-09-06 16:58:14 +0000 | [diff] [blame] | 133 | } |
Ollie Lho | 761bf1b | 2004-03-20 16:46:10 +0000 | [diff] [blame] | 134 | int erase_82802ab(struct flashchip *flash) |
Ronald G. Minnich | 5643942 | 2002-09-06 16:58:14 +0000 | [diff] [blame] | 135 | { |
| 136 | int i; |
Ronald G. Minnich | 5643942 | 2002-09-06 16:58:14 +0000 | [diff] [blame] | 137 | unsigned int total_size = flash->total_size * 1024; |
| 138 | |
Ollie Lho | 761bf1b | 2004-03-20 16:46:10 +0000 | [diff] [blame] | 139 | printf("total_size is %d; flash->page_size is %d\n", |
| 140 | total_size, flash->page_size); |
| 141 | for (i = 0; i < total_size; i += flash->page_size) |
Ronald G. Minnich | 5643942 | 2002-09-06 16:58:14 +0000 | [diff] [blame] | 142 | erase_82802ab_block(flash, i); |
| 143 | printf("DONE ERASE\n"); |
Ollie Lho | 761bf1b | 2004-03-20 16:46:10 +0000 | [diff] [blame] | 144 | return (0); |
Ronald G. Minnich | 5643942 | 2002-09-06 16:58:14 +0000 | [diff] [blame] | 145 | } |
| 146 | |
Uwe Hermann | a7e0548 | 2007-05-09 10:17:44 +0000 | [diff] [blame] | 147 | void write_page_82802ab(volatile uint8_t *bios, uint8_t *src, |
| 148 | volatile uint8_t *dst, int page_size) |
Ronald G. Minnich | 5643942 | 2002-09-06 16:58:14 +0000 | [diff] [blame] | 149 | { |
| 150 | int i; |
Ronald G. Minnich | 5643942 | 2002-09-06 16:58:14 +0000 | [diff] [blame] | 151 | |
Ollie Lho | 761bf1b | 2004-03-20 16:46:10 +0000 | [diff] [blame] | 152 | for (i = 0; i < page_size; i++) { |
| 153 | /* transfer data from source to destination */ |
| 154 | *dst = 0x40; |
| 155 | *dst++ = *src++; |
| 156 | wait_82802ab(bios); |
| 157 | } |
| 158 | |
| 159 | } |
| 160 | |
Ollie Lho | 184a404 | 2005-11-26 21:55:36 +0000 | [diff] [blame] | 161 | int write_82802ab(struct flashchip *flash, uint8_t *buf) |
Ollie Lho | 761bf1b | 2004-03-20 16:46:10 +0000 | [diff] [blame] | 162 | { |
| 163 | int i; |
Uwe Hermann | a7e0548 | 2007-05-09 10:17:44 +0000 | [diff] [blame] | 164 | int total_size = flash->total_size * 1024; |
| 165 | int page_size = flash->page_size; |
Stefan Reinauer | ce53297 | 2007-05-23 17:20:56 +0000 | [diff] [blame] | 166 | volatile uint8_t *bios = flash->virtual_memory; |
Ollie Lho | 761bf1b | 2004-03-20 16:46:10 +0000 | [diff] [blame] | 167 | |
| 168 | erase_82802ab(flash); |
Ronald G. Minnich | 5643942 | 2002-09-06 16:58:14 +0000 | [diff] [blame] | 169 | if (*bios != 0xff) { |
| 170 | printf("ERASE FAILED\n"); |
| 171 | return -1; |
| 172 | } |
Ollie Lho | 761bf1b | 2004-03-20 16:46:10 +0000 | [diff] [blame] | 173 | printf("Programming Page: "); |
| 174 | for (i = 0; i < total_size / page_size; i++) { |
| 175 | printf("%04d at address: 0x%08x", i, i * page_size); |
| 176 | write_page_82802ab(bios, buf + i * page_size, |
| 177 | bios + i * page_size, page_size); |
Uwe Hermann | a7e0548 | 2007-05-09 10:17:44 +0000 | [diff] [blame] | 178 | printf("\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b"); |
Ronald G. Minnich | 5643942 | 2002-09-06 16:58:14 +0000 | [diff] [blame] | 179 | } |
| 180 | printf("\n"); |
Ollie Lho | 761bf1b | 2004-03-20 16:46:10 +0000 | [diff] [blame] | 181 | protect_82802ab(bios); |
| 182 | return (0); |
Ronald G. Minnich | 5643942 | 2002-09-06 16:58:14 +0000 | [diff] [blame] | 183 | } |